<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .con{
            width: 150px;
            height: 150px;
            border: 1px solid #000;
            /* 纯英文或数字 正常换行 */
            word-wrap: break-word;
            
            /*让单词不单独占一行*/
            word-break: break-all;
        }
    
    </style>
</head>
<body>
    
    <div class="con">
        fjdslfj485u 0820jkfrj0943u50940fjodjfwe0tu409u042fjilf
    </div>


</body>
</html>